I inherited a US Springfield 1873 with serial number 10064. It came out of Colorado but I'm trying to determine where it was issued or just a bit more on its history. Sincerely, SGM Garren Fulmer USA-Ret.

P.S. The only other mark I've found is a "U" stamped on the metal stock ring just in front of the rear sight and the ring at the front attaching the sling.